Corrugated culvert.



F. J. FELDT.

-UORRUGATED CULVBBT.

l APPLIoA'rIoN FILED AUG.29, A1910.

977,944. PatentedDec. 6, 1910.

BY wf# f UNITED'l STATES PATENT onirica.

FERDINAND J. lEELD'I, or PEORIA, ILLINOIS.

s1ieifiation of Letters raient.

CORRUGATED CUIIVEBT.

Application led August 29,` 1910. Serial No. 579,413.

To all whom 'it may concern;

Be it known that I, FERDINAND J. FELDT, .a citizen of the United States, residing at .Peoria, in the county of Peoria and State of Illinois, have invented certain new and useful' Improvements in Corrugated Cul'- verts, tion.

My invention.- relates to sheet metal culverts.

My object is to provide a culvert adapted of which the following is a speciicato withstand readily the circumferential pressure attending their use and likewise to connect the sections in a manner to stand the lateral pressure that in use tends and vdoes force the sections out of line, making j the connected culvert sag-at points of its length, leavin@- pockets, within whichwater will stand, which is detrimental thereto.

In culvert structure, in use now, breaking or disconnection of jointsof culvert sections frequently occurs and when so broken and disconnected, the movement of containing embankment in settling tends and does eject the culvert endwise. It is to overcome this frequent disunion of sections and to stitfen the combined culvert lengthwise, that I have developed the, section connecting means of my present invention.

' Referring to the drawings: Figure l is a plan view of a longitudinal section of a I Fig. 8 s

culvert, showing themanner of joining sections together. Fig. 2 is an end View of the culvert. Fig. 3 is a longitudinal sectional view, illustrating detail manner of making the connections. Fig. 4 i's a cross section on the line 'X--X of Fig. 3. Fig. 5 is a detail perspective view, showing a coupling band. Fig. 6 shows a clamp for uniting v.culvert sections. ,Fig 7 is a sectional view, showin ythe manner of applying the clamp ows the clamp applied. v,Referring to the drawing, 2 are circum- ,ferentially corrugated culvert sections; 3 44,5 f. Y "tect the outer ends of the terminal sections e when laid. Each section2 is formed at its 'Isa reinforcing metal ring, adapted to proends inv size and sha e, one to enter and the other to receive tlie adjacent' section in themanneryshown in Fig. 3the outer overlapping end 4, flarin outwardly to form a stop and to extend t e joint. The sections l 2 being passed one upon another, the joints are locked by means of the stiiiening and compression band 6, which is formed in ring shape, but left open so as to be drawn together or expanded to tit perfectly and closely over the joints which are not always of a uniform circumference. The band is perforated, as shown, and one of the perforations is formed in. each end uf the band, so that as the ends are drawn together they make up a complete opening adapted to surround a bolt; 7 are stiffener plates, which are simply washers, elongated and shaped to bear over and extend along the band 6, as a stifl'ener for the joint and a bearing for the nuts 8 carried on bolts 9, which serve to unite the band 6 to the connected ends of section 2.

the meeting sections are engaged as in Fig. 3, the ends telescoping some distance, thus strengthening the joint against lateral strain. The band 6, being first slipped about the outside end portion, then the stiffener plates 7 and bolts 9 are applied and when the parts are drawn together, the band 6 will be drawn together until it fits snug around the culvert joint.

The'culvert sections 2, may be joined at the place they are to be used, but it is a common practice to unite them in 20 ft. lengths at the factories where they are built. When it is desired to use lengths greater than 20 ft., the long sections may be united by means of outside sectional face clamps,

such as I have shown herein in Fig. 6, 7

and 8, and referred to generally as 10. .This clamp is made in two sections as 11, shaped to conform to so much of the culvert surface as it is designed to embrace, and it is designed to overlap at least one corrugation of each adjacent section, as shown in the figures; 12 are flanged parts secured'to clamp section 11 and adapt-ed to be secured together by means of bolts, as shown. Any form of clamp may be used that will serve its urpose.

Aat I claim isf W 1. In combination with short corrugated tubular sections, the meeting ends extended some distance from the terminal corrugations and telescoping with each other, of a compressible band, stiifener plates, and means for securing the parts together in the relation substantially as shown.

2. The combination with short circumferentially corrugated metal sections, proparts together in the relation shown and vided with telescoping longitudinally exdescribed. l0 tending straight terminal ends and means In testimony whereof I alx my signature for locking the terminal ends together, comin presence of two Witnesses.

prsing a perforated band, itsl ends dis- FERDINAND4 J. FELDT. united, elongated perforated stiffener plates, Vtnesses: conforming to the shape of the band and A. B. FINK, Y

bolts' and nuts or the like for securing the W. V. TEFFT. 

